CN215418313U - Uniform temperature battery shell - Google Patents
Uniform temperature battery shell Download PDFInfo
- Publication number
- CN215418313U CN215418313U CN202120843803.9U CN202120843803U CN215418313U CN 215418313 U CN215418313 U CN 215418313U CN 202120843803 U CN202120843803 U CN 202120843803U CN 215418313 U CN215418313 U CN 215418313U
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- shell
- casing
- heat
- overflow
- temperature
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- 239000011257 shell material Substances 0.000 claims abstract description 83
- 239000012782 phase change material Substances 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 238000007599 discharging Methods 0.000 abstract description 4
- 238000009833 condensation Methods 0.000 abstract description 3
- 230000005494 condensation Effects 0.000 abstract description 3
- 230000007704 transition Effects 0.000 abstract description 2
- 230000017525 heat dissipation Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
A temperature-equalizing battery shell comprises a shell body and a cover plate, wherein the shell body comprises an outer shell and an inner shell. The inner shell is embedded in the outer shell, a heat conduction pipeline is arranged at the joint part of the inner shell and the outer shell, and phase change materials are filled in the heat conduction pipeline; the heat conduction pipeline comprises a confluence part and an overflow part, the confluence part is positioned at the bottom of the shell, the overflow part is communicated with the confluence part, and the overflow part extends from the bottom of the shell to the direction close to the cover plate. The phase-change material in the heat conduction pipeline can absorb the heat released by the battery during charging and discharging, so that the overall heat transfer efficiency of the shell is improved; phase change material takes place to get into overflow portion after the phase transition, and flows back to the portion of converging after the condensation, and the process that phase change material shifted has realized thermal transfer simultaneously, makes the casing possess the samming ability, can shift the heat to the position of easily dispelling the heat on the casing, and then improves the holistic radiating effect of casing.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a uniform-temperature battery shell.
Background
At present, the mainstream battery PACK cooling method is air cooling, in order to pursue higher box energy density, the electric core is arranged often very compactly, the effective heat convection area of electric core and air is very limited, and inside and shell direct contact of electric core is organic matter electrolyte, its coefficient of heat conductivity is relatively poor, the position that only can carry out heat convection can obtain the radiating effect of expectation, and the radiating effect at other positions on the electric core is poor, lead to electric core heat dissipation inhomogeneous.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provides the temperature-equalizing battery shell which has the temperature-equalizing capacity and is beneficial to improving the heat dissipation effect of the battery core.
The purpose of the utility model is realized by the following technical scheme:
a temperature-uniformed battery case comprising: the device comprises a shell and a cover plate, wherein the shell comprises an outer shell and an inner shell;
the inner shell is embedded in the outer shell, a heat conduction pipeline is arranged between the inner shell and the outer shell, and phase-change materials are filled in the heat conduction pipeline;
the heat conduction pipeline comprises a confluence part and an overflow part, the confluence part is positioned on the bottom of the shell, the overflow part is communicated with the confluence part, and the overflow part extends from the bottom of the shell to the direction close to the cover plate.
In one embodiment, a recess is disposed on an edge of the inner shell, the recess and the outer shell define a filling opening, and the filling opening is communicated with the heat conduction pipeline.
In one embodiment, the recess is provided in plurality.
In one embodiment, the overflow part is provided in plurality, and the overflow parts are distributed on the side surface of the shell at intervals.
In one embodiment, the distance between every two adjacent overflow parts is equal.
In one embodiment, a flow dividing channel for communicating with the overflow part is arranged on the confluence part.
In one embodiment, the length of the inner shell is less than the length of the outer shell.
In one embodiment, the bus bar has a mesh structure.
In one embodiment, the outer wall of the inner shell is provided with a groove, and the groove and the inner wall of the outer shell jointly enclose a heat conducting pipeline.
In one embodiment, the inner wall of the outer shell is provided with a groove, and the groove and the outer wall of the inner shell jointly form a heat conducting pipeline.
Compared with the prior art, the utility model has at least the following advantages:
1. the phase-change material in the heat conduction pipeline can absorb heat emitted by the battery cell during charging and discharging, so that the overall heat transfer efficiency of the shell is improved;
2. phase change material takes place to get into overflow portion after the phase transition, and flows back to the portion of converging after the condensation, and the process that phase change material shifted has realized thermal transfer simultaneously, makes the casing possess the samming ability, can shift the heat to the position of easily dispelling the heat on the casing, and then improves the holistic radiating effect of casing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is an exploded view of a thermally uniform battery case according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a temperature-uniformed battery case according to an embodiment of the present invention;
FIG. 3 is an enlarged view of FIG. 2 at A;
fig. 4 is a schematic structural diagram of a position of a filling opening in an embodiment of the present invention.
Reference numerals:
the uniform temperature battery comprises a uniform temperature battery shell 10, a filling opening 11, a fall 12, a bottom 21, a side surface 22, a shell 100, an outer shell 110, an inner shell 120, a concave part 121, a cover plate 200, a heat conduction pipeline 300, a confluence part 310, a diversion channel 311 and an overflow part 320
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a temperature-equalizing battery case 10 includes: the shell 100 comprises an outer shell 110 and an inner shell 120, namely, the shell 100 is a double-layer structure, the inner shell 120 is embedded in the outer shell 110, and a heat conduction pipeline 300 is arranged at the joint part of the inner shell 120 and the outer shell 110, specifically, after the inner shell 120 is embedded in the outer shell 110, the outer wall of the inner shell 120 and the inner wall of the outer shell 110 jointly enclose the heat conduction pipeline 300, namely, a hollow area exists at the boundary position of the outer shell 110 and the inner shell 120, the hollow area is the heat conduction pipeline 300, and the heat conduction pipeline 300 is filled with a phase change material;
the phase-change material is a heat-conducting working medium with a low boiling point, such as pure water, acetone, fluoride and other common heat-conducting materials, and by utilizing the characteristic of the low boiling point, the phase-change material absorbs heat generated in the process of charging and discharging the battery core, evaporates (namely, changes phase from liquid to gas), and is transferred from the bottom of the shell 100 to the direction of the cover plate 200 along the heat-conducting pipeline 300, the transfer process is accompanied with the transfer of the heat, and when the phase-change material carries the heat to be taken away, the phase-change material changes the condensation back to liquid and flows back to the bottom of the shell 100 along the heat-conducting pipeline 300 from new time. In the process, the phase-change material is in a heat absorption process when being converted from the liquid state to the gas state, and the process of being converted from the gas state to the liquid state releases heat outwards.
It can be understood that in order to pursue higher energy density, the battery cell is often very compact to arrange in the battery box, leads to electric core and air contact's area very limited like this, leads to the heat transfer area on the electric core to receive the restriction promptly, again because the heat conductivity coefficient of the material of casing is poor, the heat conductivility is not enough for heat distribution is inhomogeneous on the electric core, and the position heat dissipation of ventilation is better, but all the other positions department radiating effect is relatively poor. The embodiment improves the structure of the casing 100, the heat conducting pipeline 300 is arranged between the outer shell 110 and the inner shell 120, the phase-change material inside the heat conducting pipeline 300 is used for absorbing heat generated by the electric core, and the phase-change material is used for changing the shape when absorbing and releasing heat, and the heat generated when carrying the electric core, so that the heat is transferred to the side surface of the casing 100 from the bottom of the casing 100, namely, the part with good heat dissipation effect on the casing 100 is moved, and the problem of poor local heat dissipation caused by poor heat conduction performance of the casing material is solved.
Referring to fig. 2 and 3, the heat conducting pipe 300 includes a converging portion 310 and an overflow portion 320, the converging portion 310 is located on the bottom of the casing 100, the overflow portion 320 is communicated with the converging portion 310, and the overflow portion 320 extends from the bottom 21 of the casing 100 to a direction close to the cover plate 200, that is, the overflow portion 320 is located on the side 22 of the casing 100. The phase change material absorbs heat of the cell, evaporates, rises along the overflow portion 320, and moves to the side 22 of the casing 100 with the heat, and the heat carried by the phase change material is absorbed and condensed at the overflow portion 320, and flows back to the backflow portion 310.
Referring to fig. 4, in order to fill the phase change material, a recess 121 is disposed on an edge of the inner shell 120, the recess 121 and the outer shell 110 enclose a filling opening 11, and the filling opening 11 is communicated with the heat conducting pipe 300. And a plurality of the recesses 121 are provided. After the phase change material is filled, the filling opening 11 and thus the heat conduction pipeline 300 can be closed by pressing the concave part 121.
In order to improve the temperature equalization effect, a plurality of overflow portions 320 are provided, and the plurality of overflow portions 320 are distributed on the side surface of the casing 100 at intervals, so as to improve the coverage area of the heat conduction pipeline 300.
In order to ensure the temperature equalization effect, the distance between every two adjacent overflow parts 320 is equal, so that the local temperature of the battery cell is prevented from being too high.
Referring to fig. 1, in an embodiment, the confluence portion 310 is provided with a flow dividing channel 311 for communicating with the overflow portion 320.
Referring to fig. 2 and 4, in order to improve the structural stability and sealing performance of the housing, the length of the inner housing 120 is smaller than that of the outer housing 110. After the inner shell 120 is inserted into the outer shell 110, the edge is lower than the edge of the outer shell 110, and the fall 12 between the edge of the outer shell 110 and the edge 120 of the inner shell is the mounting location of the cover plate 200.
In an embodiment, the converging portion 310 is a mesh structure, so as to reduce the filling amount of the phase change material, and save the manufacturing cost of the housing 100 while ensuring the coverage area of the heat conducting pipe 300.
In one embodiment, the outer wall of the inner shell 120 is provided with a groove, and the groove and the inner wall of the outer shell 110 together form the heat conducting pipe 300. Similarly, the inner wall of the outer shell 110 is provided with a groove, and the groove and the outer wall of the inner shell 120 jointly enclose a heat conducting pipeline 300.
Compared with the prior art, the utility model has at least the following advantages:
1. the phase-change material in the heat conduction pipeline 300 can absorb heat emitted by the battery cell during charging and discharging, so that the overall heat transfer efficiency of the shell 100 is improved;
2. the phase-change material enters the overflow portion 320 after undergoing phase change, and flows back to the confluence portion 310 after being condensed, and the phase-change material transfer process simultaneously realizes heat transfer, so that the shell 100 has temperature equalization capability, and can transfer heat to a position on the shell 100 where heat is easy to dissipate, thereby improving the overall heat dissipation effect of the shell 100.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A temperature-uniformed battery case comprising: the device comprises a shell and a cover plate, and is characterized in that the shell comprises an outer shell and an inner shell;
the inner shell is embedded in the outer shell, a heat conduction pipeline is arranged at the joint part of the inner shell and the outer shell, and phase change materials are filled in the heat conduction pipeline;
the heat conduction pipeline comprises a confluence part and an overflow part, the confluence part is positioned on the bottom of the shell, the overflow part is communicated with the confluence part, and the overflow part extends from the bottom of the shell to the direction close to the cover plate.
2. The temperature-equalizing battery casing as claimed in claim 1, wherein a recess is formed on an edge of the inner casing, the recess and the outer casing define a filling opening, and the filling opening is communicated with the heat conducting pipeline.
3. The temperature-equalizing battery case according to claim 2, wherein the recess is provided in plurality.
4. The temperature-equalizing battery casing as in claim 1, wherein the overflow portion is provided in plurality, and the plurality of overflow portions are distributed at intervals on the side surface of the casing.
5. The temperature-equalizing battery case as recited in claim 4, wherein a distance between every two adjacent overflow portions is equal.
6. The temperature-equalizing battery case of claim 4, wherein a flow-dividing channel is provided on the bus bar for communicating with the overflow.
7. The thermally uniform battery case according to any one of claims 1 to 6, wherein the length of the inner case is less than the length of the outer case.
8. The temperature-equalizing battery case as claimed in any one of claims 1 to 6, wherein the bus bar part has a mesh structure.
9. The temperature-equalizing battery casing as claimed in any one of claims 1 to 6, wherein a groove is formed on an outer wall of the inner casing, and the groove and an inner wall of the outer casing jointly enclose a heat conducting pipeline.
10. The temperature-equalizing battery casing as claimed in any one of claims 1 to 6, wherein a groove is formed on an inner wall of the outer casing, and the groove and an outer wall of the inner casing jointly enclose a heat conducting pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120843803.9U CN215418313U (en) | 2021-04-22 | 2021-04-22 | Uniform temperature battery shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120843803.9U CN215418313U (en) | 2021-04-22 | 2021-04-22 | Uniform temperature battery shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215418313U true CN215418313U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120843803.9U Active CN215418313U (en) | 2021-04-22 | 2021-04-22 | Uniform temperature battery shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215418313U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024061197A1 (en) * | 2022-09-23 | 2024-03-28 | 舜传科技(深圳)有限公司 | Battery and means of transport |
-
2021
- 2021-04-22 CN CN202120843803.9U patent/CN215418313U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024061197A1 (en) * | 2022-09-23 | 2024-03-28 | 舜传科技(深圳)有限公司 | Battery and means of transport |
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